Accessing the WAN Final

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1 Refer to the exhibit. From the output of the show interface commands, at which OSI layer is a fault indicated? -network 2 Refer to the exhibit. What is placed in the address field in the header of a frame that will travel from the DC router to the Orlando router? -DLCI 321 3 Which two functions are provided by the Local Management Interface (LMI) that is used in Frame Relay networks? (Choose two.) -simple flow control -exchange of information about the status of virtual circuits 4 Which option represents a best practice for applying ACLs? -Extended ACLs should be applied closest to the source that is specified by the ACL. 5 A network administrator has changed the VLAN configurations on his network switches over the past weekend. How can the administrator determine if the additions and changes improved performance and availability on the company intranet? -Conduct a performance test and compare with the baseline that was established previously.

description

CCNA Exploration Accessing the WAN course

Transcript of Accessing the WAN Final

Page 1: Accessing the WAN Final

1 Refer to the exhibit. From the output of the show interface commands, at

which OSI layer is a fault indicated?

-network

2 Refer to the exhibit. What is placed in the address field in the header of

a frame that will travel from the DC router to the Orlando router?

-DLCI 321

3 Which two functions are provided by the Local Management Interface (LMI)

that is used in Frame Relay networks? (Choose two.)

-simple flow control

-exchange of information about the status of virtual circuits

4 Which option represents a best practice for applying ACLs?

-Extended ACLs should be applied closest to the source that is specified by

the ACL.

5 A network administrator has changed the VLAN configurations on his network

switches over the past weekend. How can the administrator determine if the

additions and changes improved performance and availability on the company

intranet?

-Conduct a performance test and compare with the baseline that was

established previously.

Page 2: Accessing the WAN Final

6 A recently patched application server is experiencing response time

problems. The network on which the application server is located has been

experiencing occasional outages that the network team believes may be related

to recent routing changes. Network and application staffs have been notified

to work on their respective issues. Which statement applies to this

situation?

-It will be difficult to isolate the problem if two staffs are implementing

changes independently.

7 Which two statements are true of IP extended access lists? (Choose two.)

-Extended access lists can be assigned numbers that range from 100 - 199.

-When configuring an extended access list the source IP address is entered

8 Which statement about a VPN is true?

-VPNs use virtual Layer 3 connections that are routed through the Internet.

9 Which technology is used to dynamically map next hop, network layer

addresses to virtual circuits in a Frame Relay network?

-DLCI

10 Refer to the exhibit. The link between the CTRL and BR_1 routers is

configured as shown in the exhibit. Why are the routers unable to establish a

PPP session?

-The usernames are misconfigured.

Page 3: Accessing the WAN Final

11 Refer to the exhibit. A network administrator has issued the commands that

are shown on Router1 and Router2. A later review of the routing tables

reveals that neither router is learning the LAN network of the neighbor

router. What is most likely the problem with the RIPng configuration?

-The RIPng process is not enabled on interfaces.

12 Which IEEE 802.16 broadband wireless technology allows users to connect to

the ISP at speeds comparable to DSL and cable?

-WiMAX

Page 4: Accessing the WAN Final

13 Refer to the exhibit. Communication between two peers has failed. Based on

the output that is shown, what is the most likely cause?

-PPP negotiation failure

14 Which three parameters must be configured on a router in order to enable

SSH? (Choose three.)

-hostname

-domain name

-routing protocol

15 Which three statements are true about creating and applying access lists?

(Choose three.)

-One access list per port per protocol per direction is permitted.

-There is an implicit deny at the end of all access lists.

-Statements are processed sequentially from top to bottom until a match is

found.

16 Which encapsulation protocol when deployed on a Cisco router over a serial

interface is only compatible with another Cisco router?

-HDLC

17 Which additional functionality is available on an interface when the

encapsulation is changed from HDLC to PPP?

-authentication

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18 Refer to the exhibit. Computers on the internal network need access to all

servers in the external network. The only traffic that is permitted from the

external network must be responses to requests that are initiated on the

internal network. Which security measure would satisfy this requirement?

-a numbered extended ACL

19 Which combination of authentication and Layer 2 protocol should be used to

establish a link between a Cisco and a non-Cisco router without sending

authentication information in plain text?

-CHAP and PPP

20 Refer to the exhibit. A network administrator is considering updating the

IOS on Router1. What version of IOS is currently installed on Router1?

-12.4

Page 6: Accessing the WAN Final

21 Refer to the exhibit. RIPv2 has been configured on all routers in the

network. Routers R1 and R3 have not received any RIP routing updates. What

will fix the issue?

-Enable RIP authentication on R2.

22 An administrator issues the command confreg 0x2142 at the rommon 1>

prompt. What is the effect when this router is rebooted?

-Contents in NVRAM will be ignored.

23 Which statement describes CIR in a Frame Relay network?

-It is the rate that is guaranteed to the customer by the service provider.

24 While troubleshooting a PPP link that uses PAP authentication, a network

administrator notices an incorrectly configured password in the running

configuration. The administrator corrects the error by entering the command

ppp pap sent-username ROUTER_NAME password NEW_PASSWORD, but the link still

does not come up.

Assuming that the rest of the configuration is correct and that the link has

no physical layer problems, what should the administrator do?

-Shut down the interface then re-enable it.

Page 7: Accessing the WAN Final

25 Refer to the exhibit. Which data transmission technology is being

represented?

*-TDM

26 Refer to the exhibit. A technician issues the show interface s0/0/0

command on R1 while troubleshooting a network problem. What two conclusions

can be determined by from the output shown? (Choose two.)

-The bandwidth has been set to the value of a T1 line.

-There is no failure indicated in an OSI Layer 1 or Layer 2.

27 When would the multipoint keyword be used in Frame Relay PVCs

configuration?

-when participating routers are in the same subnet

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28 Refer to the exhibit. What does the status of 1 under the “Deleted” column

indicate in the output?

-A static mapping is configured with a wrong DLCI number on the Branch

router.

29 Refer to the exhibit. Partial results of the show access-lists and show ip

interface FastEthernet 0/1 commands for router Router1 are shown. There are

no other ACLs in effect. Host A is unable to telnet to host B. Which action

will correct the problem but still restrict other traffic between the two

networks?

-Reverse the order of the TCP protocol statements in the ACL.

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30 Refer to the exhibit. Routers R1 and R2 have been configured with EIGRP in

the same autonomous system. Computers PC1 and PC2 are not able to ping each

other. Further investigation has revealed that the route to 192.168.10.0 is

missing from the routing table on R2. What is the cause of the problem?

-The FastEthernet interfaces on R1 are configured as passive.

31 What can a network administrator do to recover from a lost router

password?

-boot the router to ROM monitor mode and configure the router to ignore the

startup configuration when it initializes

Page 10: Accessing the WAN Final

32 Refer to the exhibit. All devices are configured as shown in the exhibit.

PC1 is unable to ping the default gateway. What is the cause of the problem?

-Port Fa0/2 on S2 is assigned to the wrong VLAN.

33 Refer to the exhibit. PAT has been implemented on router R2. PC1 and PC2

are unsuccessful when attempting to connect to Internet resources. What is a

possible cause?

-The access control list is missing a statement for the 10.94.6.0 network.

34 Which option correctly defines the capacity through the local loop

guaranteed to a customer by the service provider?

-CIR

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35 Refer to the exhibit. A host connected to Fa0/0 is unable to acquire an IP

address from this DHCP server. The output of the debug ip dhcp server command

shows "DHCPD: there is no address pool for 192.168.1.1". What is the problem?

-The pool of addresses for the 192Network pool is incorrect.

36 Which statement is true regarding wildcard masks?

-A "0" in the wildcard mask identifies IP address bits that must be checked.

37 Which protocol is implicitly denied at the end of an IPv4 access list?

-IP

38 Refer to the exhibit. To reach R2, and for configuring Frame Relay on the

point-to-point interfaces shown in the graphic, which DLCI should be used in

the frame-relay interface-dlci command that is issued on R1?

-100

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39 An administrator is unable to receive e-mail. While troubleshooting the

problem, the administrator is able to ping the local mail server IP address

successfully from a remote network and can successfully resolve the mail

server name to an IP address via the use of the nslookup command. At what OSI

layer is the problem most likely to be found?

-application layer

40 Which address provides an example of an IPv6 link-local address?

*-FE80::1324:ABCD

41 Refer to the exhibit. PC1, PC2, and PC3 are configured with dynamic

address assignments. PC2 is assigned an IP address from the DHCP server. What

would account for the IP addresses that are currently assigned to PC1 and

PC3?

-R1 interface Fa0/0 is not in the same network as the DHCP server.

42 What is accomplished by using the auto secure command on a Cisco router?

-It disables nonessential system processes and services.

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43 Refer to the exhibit. What statement is true about the core router

devices?

-They support multiple telecommunications interfaces of the highest speed

and are able to forward IP packets at full speed on all of those interfaces.

44 Refer to the exhibit. A network administrator is trying to connect R1

remotely to make configuration changes. Based on the exhibited command

output, what will be the result when attempting to connect to R1?

-failure to connect due to incomplete configuration for Telnet

45 What happens when a remote Frame Relay host is receiving more packets than

it can process?

-The remote host sets the DE bit.

Page 14: Accessing the WAN Final

46 Refer to the exhibit. Results of the show vlan and show vtp status

commands for switches S1 and S2 are displayed in the exhibit. VLAN 11 was

created on S1. Why is VLAN 11 missing from S2?

-The VTP domain names do not match.

47 Refer to the exhibit. Company ABC expanded its business and recently

opened a new branch office in another country. IPv6 addresses have been used

for the company network. The data servers Server1 and Server2 run

applications which require end-to-end functionality, with unmodified packets

that are forwarded from the source to the destination. The edge routers R1

and R2 support dual stack configuration. What solution should be deployed at

the edge of the company network in order to successfully interconnect both

offices?

-a manually configured IPv6 tunnel between the edge routers R1 and R2

48 Which method is most effective in protecting the routing information that

is propagated between routers on the network?

-Configure routing protocol authentication.

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49 A technician is talking to a colleague at a rival company and comparing

DSL transfer rates between the two companies. Both companies are in the same

city, use the same service provider, and have the same rate/service plan.

What is the explanation for why company 1 reports higher download speeds than

company 2 reports?

-Company 1 is closer to the service provider than is company 2.

50 When NAT is in use, what is used to determine the addresses that can be

translated on a Cisco router?

-access control list